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G07 Monitor - Kicked Neck++


SNESNESCUBE64

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This has been a project I've had for a while. Basically, I had aquired a g07 arcade monitor had it's necked, killing the tube. Being the nature of it, I really wanted to bring this thing back to life. For reference, I've had this project since the end of october, and I just now finally finished it, shows how behind I am...

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So the first step here, find a donor CRT. Compatible 19" tubes are starting to get harder to find. Fortunately, I had a broken tv set with a tube that had high life in the tube according to my CRT tester. I checked the tube that was in the tv set, it was a 510UEB22. Not an ideal replacement for the G07, but it was a tube that used the CR23 pinout and it was the right size, so it was worth a shot. Only problem I forsaw is that the tv set's yoke was slightly off in its readings, but was close enough to where it would work. This was great because I REALLY didn't want to swap the yoke, as it would have been a nightmare to redo the convergence.

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After swapping the tubes, I without hesitation i fired it up. Picture looked alright. Initially I had swapped the wires for the vertical axis, which made it display upside down. That was an easy fix however, as I just needed to switch the Y axis yoke wire.

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There was one problem that I had noticed though. The picture was kind of folding over itself (on the bottom in the picture). This is can be a sign of aged capacitors, unfortunately all the capacitors were original to monitor, which means they absolutely needed to be changed. While I was working on it, I also realized the flyback was original. After hearing horror stories about original flybacks for the G07, I decided to change that as well. 20 or so capacitors and a new flyback later, I was finally able to fire it back up again.

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Firing it up, the picture looks pretty good, could probably use some slight adjustment, but that's ok. It has some slight geometry errors but it won't mattee when a game gets going on it.

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It is kind of a bummer that the original tube was destroyed, but hey, at least I was able to get it replaced. I did keep the CRT's guns as a souvenir though.

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Edited by SNESNESCUBE64

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Nice, did you do any pot adjustments at all? I bet you can easily get the image centered and stretched correctly.

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10 hours ago, Abelardo said:

Nice, did you do any pot adjustments at all? I bet you can easily get the image centered and stretched correctly.

I didn't need to do much. I adjusted B+ and position a bit. But it worked pretty good. Unfortunately G07 doesnt have a horizontal position pot, only 3 jumpers

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51 minutes ago, SNESNESCUBE64 said:

I didn't need to do much. I adjusted B+ and position a bit. But it worked pretty good. Unfortunately G07 doesnt have a horizontal position pot, only 3 jumpers

I see, not familiar myself with the G07, anyways it looks good, and you didn't have to mess with convergence 👍

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